Quote:
Originally Posted by gregbradley
Quite an improvement up to 32hours and then only a bit extra for a lot of extra exposure.
Greg.
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I should have linked to the original size version: (
http://www.rolfolsenastrophotography...er/i-Sb22cmT/O)
SNR improves significantly with each step, all the way up to 103 hours. The very faintest details are only well defined in the last frame.